slab internal walls

mukki

plasterer wants me to slap the external walls with 50mm insulated plasterboard which is fine but he also wants the internal wall slabbed with normal plasterboard


anyone know any advantages or disadvantages (other then reducing his work load)

bbam

Interestingly I'm in the same position.. He insists that it saves enough materials & time that the overall price is less, I couldnt agrue as he was cheapest of 3 quotes..
Are there any drawbacks to doing it ??, he showed me his own newly built house which is finished this way and it looked fine to me, but what would I know !!
Slan,
Bam

brickie No 1

mukki wrote:

plasterer wants me to slap the external walls with 50mm insulated plasterboard which is fine but he also wants the internal wall slabbed with normal plasterboard


anyone know any advantages or disadvantages (other then reducing his work load)

this is a good job an an insulated plasterboard makes good sence i take it you house is soild build cavity insulation has to work true a 100mm block so its warmer with it on the inside if you get what i meen, an plasterboarding saves time an the house will dry out faster.

dogg_r_69

mukki wrote:

plasterer wants me to slap the external walls with 50mm insulated plasterboard which is fine but he also wants the internal wall slabbed with normal plasterboard

If you're going doing this Run a 4x2 around the bottom of the wall to nail the skirting to, It's a nightmare skirting walls without it.

mukki

so is the only advantage that the house will dry quicker?


doubt i'll bother

Mellor

and the cost

mukki

Mellor wrote:

and the cost

is it cheaper to slab?

mukki

would ye slab the internal wall if you had the choice?

eoghan.geraghty

Mukki I'm not sure I understand your question.
Are you renovating? So you have existing internal block walls that you want a nice finish on. If the walls are very poor condition it might well be easier for the plasterer to daub on sheets of 9mm board than to try and bond it out.
9mm board is cheap enough.
Its definitely worth putting the insulated board on any external walls, just done the same myself, got the plasterer to daub them on rather than mushroom as existing walls were way off level.

patdbaker

you could slab internal walls along with inside of external walls, tape and joint the lot, get rid of plastering completely. not sure how much you can save this way?

Mellor

mukki wrote:

is it cheaper to slab?

Its generally quicker than full wet trade. If your pay a daily rate for the plaster this will save you.
In this country we are getting better at slab and taping. Some top level hotels were donr without skimming. Slabbing and taping the joints. If done carefully it saves money and time. And with quaility products will look as good.

mukki

eoghan.geraghty wrote:

Mukki I'm not sure I understand your question.
Are you renovating? So you have existing internal block walls that you want a nice finish on. If the walls are very poor condition it might well be easier for the plasterer to daub on sheets of 9mm board than to try and bond it out.
9mm board is cheap enough.
Its definitely worth putting the insulated board on any external walls, just done the same myself, got the plasterer to daub them on rather than mushroom as existing walls were way off level.

its a new build,

yeah i am definately going to put insulated plasterboard on the outer walls (external) of the house but the plasterer recommended putting plain plasterboard of every wall, so in every room all 4 walls will be plaster boarded


as for just taping the joints, my father was a plasterer, uncle still is, a counse is, imagine the abuse i'd get




one thing i dont like is the idea hammering rows of steel nails into the new walls to hold up the plasterboard, i'd imagine a lot of the blocks will crack

ircoha

mukki wrote:

its a new build,

yeah i am definately going to put insulated plasterboard on the outer walls (external) of the house but the plasterer recommended putting plain plasterboard of every wall, so in every room all 4 walls will be plaster boarded


as for just taping the joints, my father was a plasterer, uncle still is, a counse is, imagine the abuse i'd get




one thing i dont like is the idea hammering rows of steel nails into the new walls to hold up the plasterboard, i'd imagine a lot of the blocks will crack[ You wont be using steel nails: they will be stuck on or with mushroom fixings but not nails:eek: :eek:

OP just a thought on this:
if u insulate the external walls with the 50mm board, ideally u should also insulate any internal walls that ajoin the external walls because it is estimated that the first meter acts like a big iceberg.

I trust some of the others on this forum will correct me if I am wrong

northdublin

im currently renovating my own home and ive done all the slabbing myself. like you have said insulated plasterboard on the exterior walls and normal boards on the internal walls. i used a plastic fixture to secure the slabs in place. this meant a lot of drilling in each board and then scrimming the joints and where the fixtures are. ive done all the rooms like this so far, would i have been better off chisling of the old plaster down to the render and skimming over that as opposed to slabbing all the walls. also two walls i removed all the wall paper and scored the wall with a stanley, then polybonded them befor they were skimmed. in both cases the finish was excellent, but is there a less labourious way of fixing the slabs.

whitelightrider

We're just about to start our build and the builder spoke to us about this option. We are going to have a 6 inch cavity and pump it with a polypearl type insulation. He said that slabbing the internal walls can be a pain if you dont batton the wall first so you can hang pics, etc inside when finished.

ircoha

whitelightrider wrote:

We're just about to start our build and the builder spoke to us about this option. We are going to have a 6 inch cavity and pump it with a polypearl type insulation. He said that slabbing the internal walls can be a pain if you dont batton the wall first so you can hang pics, etc inside when finished.

6" cavity: nice one: very cool:

IMO this wll give a nicer feeling to the house than slabbing as the internal concrete walls will retain the heat as opposed to just heating the air.

Have you discussed the steps needed to eliminate thermal bridging around doors and windows with builder.

FYI for this sort of insulation : www.gilmartin-group.com

construct06

If i had my time back again i would carry out the following operation:

External walls: batten out, insulate between battens with kingspan/wool. Cover with plastic membrane. Fix 18mm shuttering ply to battens. Then fix plasterboard to ply. Reason for this is you get a good fixing for anything you put on wall afterwards and you get the added effect of the insulation which cannot be emphasised enough.

Internal walls: i would plaster and skim as normal.

I dont know if there are any building reg implications to putting up the ply before the slab.....

smashey

Welcome back construct06. How's the new job?

whitelightrider

ircoha wrote:

6" cavity: nice one: very cool:

IMO this wll give a nicer feeling to the house than slabbing as the internal concrete walls will retain the heat as opposed to just heating the air.

Have you discussed the steps needed to eliminate thermal bridging around doors and windows with builder.

FYI for this sort of insulation : www.gilmartin-group.com

He spoke to us about either 5in or 6in cavity so I went with the 6 in. I havent spoken to anyone about thermal bridging, but if anyone here has any info Id be glad to hear it.

ircoha

whitelightrider wrote:

He spoke to us about either 5in or 6in cavity so I went with the 6 in. I havent spoken to anyone about thermal bridging, but if anyone here has any info Id be glad to hear it.

The folks doing the build/insulation must have a methodology for dealing with it.
Have u a link to the people doing the insulation and I will look at the technical docs: I trust this is not out of the back of a van!:eek:

construct06

good to be back. Just back from 3 months round the world. Startin new job on Mon.!

So hows things have ye been helpin the common folk build their lodgings!